Los Glaciares National Park () is a federal protected area in Santa Cruz Province, Argentina.

The park covers an area of , making it the largest national park in the country.

Established on 11 May 1937,

The park's name refers to the giant ice cap in the Andes, the largest outside of Antarctica, Greenland and Iceland, feeding 47 large glaciers, of which 13 flow towards the Pacific Ocean. In other parts of the world, glaciers start at a height of at least above mean sea level, but due to the size of the ice cap, these glaciers begin at only , sliding down to . Los Glaciares borders Torres del Paine National Park to the south in Chilean territory.

Climate

The park has a cool and moist temperate climate. Mean temperatures range from in winter to in summer although at higher altitudes, the mean annual temperature can be around .